Automatic stop mechanism for looms.



PATENTED FEB. 11, 1908. E. ELLOVERING & J. A. PBLLETIER. AUTOMATIC STOP MECHANISM FOR LOOMS,

APPLIGATION FILEDNOV.23,1 906. I

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No. 878,818. PATEN'TED FEB. 11, 1908..- E. #3. LOVERING & J. PELLETIER. AUTOMATIC STOP MECHANISM FOR LOOMS.

APPLICATION FILED NOV". 23,1906.

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V UNITED STATES PATENT orrron.

ELMER E. LOVERING, OF DRAOUT, AND JOSEPH A. PELLETIER, OF LOWELL, MASSACHUSETTS.

Specification of Letters Patent.

Patented Feb. 11, 1908.

Application filed November 23. 1906. Serial No. 344.716.

To all whom it may concern:

Be it known that we, ELMER E. Lovnnnve and J OSEPH A. PELLETIER, of Dracut and Lowell, respectively, in the county of Middle- .sex and State of Massachusetts, have instrap, picker strap or other part of the loom.

The invention is embodied in an operating member adjustably mounted on the lay of a loom, and adapted to be held in its operative position only when a shuttle is present in the shuttle box, the said. operating member when in its operative position being caused to transmit motion from the lay to suitable means for stopping the loom, such, for example, as a belt shipper adapted to shiftthe driving belt from a fast to a loose pulley.

The invention consists in the several improvements which we will now-proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification,Figure 1 represents a sectional elevation of that portion of a loom which includes the lay and adjacent parts, the portion of the loom illustrated being equipped with an embodiment of our invention, which is shown with the operating mem ber held in its operative position by a shuttle in the shuttle-box. Fig. 2 represents a view similar to Fig. 1, showing the operating member in its inoperative position, which it normally assumes when the shuttle is out of the shuttle-box. Fig. 3 represents a front elevation showing the portion of the loom which contains the embodiment of our invention illustrated in Figs. 1 and 2. Fig. 4 represents a top view of the portion of the loom shown in Fig. 3. Fig. 5 represents a perspective view, showing the parts embodying our invention operatively assembled.

The same letters of reference indicate the same parts in all the figures.

In the drawings, 12 represents the lay of a loom, the same being of the usual or any suitable construction, and carrying suitable shut tle boxes 13, adapted to arrest the shuttle 14 at the ends of its throw, as usual, each shuttle box having a suitable yielding shuttle binder 15, adapted to engage and be displaced by the shuttle. Suitable picker sticks 16 are employed to throw the shuttle, as usual.

In carrying out our invention, we mount upon the lay an operating member adapted to communicate motion from the lay to suitable stopping means, such as a belt ship er, adapted to shift the driving belt from a fast to a loose pulley, the said operating member being normally held in an inoperative position, and caused to operate to transmit motion to the belt shipper only when the shuttle is not thrown from the shuttle-box at the proper time, and remains therein when the ay is moved forward to beat up the weft thread. The said operating member in this embodiment of our invention includes a binder finger 17 which is pivoted upon the binder rod 18 suitably sup orted by the lay, the said finger projecting a ove the lay, and having its upper end in such proximity to the shuttle binder 15 that when said binder is dis laced by a shuttle remaining in the shuttleox, it will displace the arm 17 from its operative position. The arm 17 is provided with an extension .18, which projects under the lay. When there is no shuttle in the shuttle-box, the shuttle binder 15 and finger 17 are in the position shown in Fig. 2, the extension 18 being depressed so that its path of movement when moved by the lay is below the lug 19 hereinafter described. The normal osition of the operating member, composed of the arm 17 and extension 18, is as shown in Fig. 2. When the shuttle binder 15 is displaced by a shuttle which has failed to leave the shuttle-box at the proper time, the displacement of the binder causes a corresponding displacement of the arm 17 and an upward movement of the extension 18, the latter being thus raised to position to engage the lug 19, as shown in Fig. 1. The lug 19 is affixed to a slide 20, which is movable in fixed guides on the frame of the loom, said guides being preferably brackets 21 and 22, adjustably secured to the loom frame, and provided with slots which receive and permit the endwise movement of portions of the slide 20. The said slide is provided at one end with an oflset portion, on which is formed an ear or lug 23. The said offset'portion is the part of the slide which is engaged with the bracket 22, the ear or lug 23 being supported in position to bear upon one edge of a knock-off lever 24, which is pivoted at to the breast-beam 26 forming a part of the frame of the loom.

The knock-off lever 24' is normally in position to bear on a shipper lever 37, when said lever is in the position it occupies while the driving belt is engaged with the pulley on the driving shaft of the loom, the shipper lever being held in this position by engagement with a notch 38 (Fig. 4) in a fixed guard plate 39. When the knockoff lever is moved from its normal position as hereinafter described, it forces the shipper lever out from the notch 38, whereupon the shipper lever is forced by spring or other pressure into position to shift the driving belt onto a loose pulley, thus, stopping the loom. The end portion of the slide 20, which is movable in the bracket 21, has a notch 27 in its lower edge. When the slide is moved to the posi tion shown in Fig. 1, the notch engages the lower end of the slot in the bracket 21, and permits the slide 20 to drop sufficiently to allow a latch or looking member 29 to drop into position to engage a corresponding locking member affixed to the lay 12, as shown in Fig. 1, this engagement of the members 29 and 30 looking the lay at one end of its movement.

The operation of the parts thus far described is as follows: It will be understood that the shuttle is thrown from its position at rest in the shuttle-box before the lay reaches the extreme of its backward movement, and that when the shuttle has been properly thrown, the extension 18 of the operating member will be depressed, when the lay reaches the extreme of its beating-up movement, so that said extension will not contact with the lug 19. It will also be seen by reference to Fig. 1 that if a shuttle remains overtime in the shuttle-box, the arm 17 and extension 18 will remain displaced until the conclusion of the backward move ment of the lay, so that the extension 18 will encounter the lug 19 when the lay approaches the extreme of its backward movement, and will, therefore, cause a movement of the slide 20 in the direction indicated by the arrow marked thereon in Fig. 1. This movement of the slide will cause the lug 23 to move the knock-off lever 24 sufficie atly to release the shipper lever and shift the driving belt from the usual fast pulley which it engages when running the loom, to the usual loose pulley which is engaged by the belt when the loom is not running. It will also be seen that the described movement of the slide 20 will bring the notch 27 therein into the bracket 21, so that the slide 20 will be permitted to drop a distance equal to the depth of the notch 27 when said notch enters the bracket 21. This dropping of the slide causes the detent member 29, which rests upon the lug 19, to drop correspondingly.

This dropping of the detent member 29 takes placejust as the lay reaches its back center, so that the member 29 engages the member 30 on the lay, thus locking the lay and preventing its return movement. loom has been thus automatically stopped, movement of the shipper lever to position to start the loom is prevented by the means next described, until the stopping mechanism has been properly adjusted or set for operation.

34 represents a locking member adapted to lock the shipper lever when it is in osition to hold the driving belt 'on the oo'se pulley, this being hereinafter termed the inoperative position of the lever. Said locking member is an arm pivoted at 35 to a bracket secured to the frame. Said arm is provided at its lower end with a stud 33 which engages a slot 32 in a lug 31 on the slide 20. The movement of slide 20 to release the shipper lever from the retaining notch 38 causes the upper end of the arm '34 to move into the position shown in Figs. 1 and 4, the arm being thus located in the path of the lever and temporarily locking the latter and preventing it from engaging the retaining notch 38 and therefore from returning the driving belt to the fast pulley.

We claim 1. In a loom, a lay, an operating member adjustably mounted on the lay, and adapted to be held in its operative position by the presence of a shuttle in the shuttle-box, said operating member being inoperative when the shuttle-box is empty, and means actuated by said operating member for throwing off the driving power of the loom and automatically and positivelylocking the lay at the end of its backward movement.

2. In a loom, a lay, an operating member adjustably mounted on the lay, and adapted to be held in its operative position by the presence of a shuttle in the shuttle-box, said operating member being inoperative when the shuttle-box is empty, and means actuated by said operating member for ositively locking the lay at the end of its ackward movement.

3. In a loom, a lay, an o crating member adjustably mounted on the ay, and adapted to be held in its operative position by the presence of a shuttle in the shuttle-box, said operating member being inoperative when the shuttle-box is empty, and means actuated by said operating member for simultaneously stopping the loom and positively locking the lay at the end of its backward movement.

4. In a loom, a lay, an operating member comprising a binder finger pivoted to the lay, and adapted to be displaced from its normal position by the shuttle binder, and an extension of said finger projecting from the lay, a slide movable in fixed guides, and having a When the lug which is arranged to be encountered by said extension at the end of the backward movement of the lay when the operating member is displaced from its normal position, and a knock-oil lever directly engaged with said slide.

5. In a loom, a lay, an operating member comprising an arm pivoted to the lay, and adapted to be displaced from its normal position by the shuttle binder, and an extension of said arm projecting from the lay, a slide movable in fixed guides, and having a lug which is arranged to be encountered by said extension when the operating member is displaced from its normal position, said slide having means for permitting its depression when the slide is moved by the operating member, a detent member or latch supported by the slide, and adapted to be depressed therewith and a complemental detent mem ber on the lay to be engaged by the firstmentioned detent member to look the. lay.

6. In a loom, a lay, a shipper lever which normally holds the driving belt in its inoperative position, means for confining the shipper lever out of its normal position, an operating member adjustably mounted on t e lay and operativeonly when a shuttle is in the shuttle-box, and means for transmitting motion from the operating member to the shipper lever to release the latter from its confined position.

7. In a loom, a lay, a ship er lever which normally holds the driving belt in its inoperative position, means for confining the shipper lever out of its normal position, an operating member adjustably mounted on the lay and operative only when a shuttle is in the shuttle-box, and a knock-off lever normally in position to engage the confined shipper lever and adapted to be moved by said operating member to release the shipper lever from its confined position.

8. In a loom, a lay, a shipper lever which normally holds the driving belt in its ino erative osition, means for confining the shipper ever out of its normal position, an operating member adjustably mounted on the lay and operative only when a shuttle is in the shuttle-box, means for transmitting motion from the operating member to the shigper lever to release the latter from its con med position, and means actuated by the operating member for temporarily locking the shipper lever in its inoperative position.

9. In a loom, a lay, a shipper lever which normally holds the driving belt in its inoperative position, means for confining theshipper lever outof its normal position, an operating member adjustably mounted on thelay and operative only when a shuttle is in the shuttle-box, means for transmitting motion from the operating member to the ship er lever to release the latter from its COIIfEiGd position, and a pivoted locking member engaged with the operating member and adapted to be moved by the latter into the path of the shipper lever.

In testimony whereof we have afiiXed our signatures, in presence of two witnesses.

ELMER E. LOVERING. JOSEPH A. PELLETIER.

Witnesses:

JAMES J. MULLEN, ANTOINE MEUNIER. 

